Question

Match List I with List II and select the correct answer using the code given below the lists:

List I	List II
1. Heavy water	(a) Bicarbonates of Mg and Ca in water
2. Temporary hard water	(b) No foreign ions in water
3. Soft water	(c) D2O
4. Permanent hard water	(d) Sulphates and chlorides of Mg and Ca in water

Codes: 

a. 1 – c, 2 – d, 3 – b, 4 – a 

b. 1 – b, 2 – a, 3 – c, 4 – d 

c. 1 – b, 2 – d, 3 – c, 4 – a 

d. 1 – c, 2 – a, 3 – b, 4 – d 

Answer 1

Correct option  (d)1 – c, 2 – a, 3 – b, 4 – d

Explanation:

Heavy water – D₂O Temporary Hard water 

– Bicarbonates of Mg/Ca in water 

Soft water – No foreign ions in water 

Permanent hard water – Sulphates and chlorides of Mg/Ca in water 

Soft water – No foreign ions in water 

Permanent hard water – Sulphates and chlorides of Mg/Ca in water